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AdventHealth Race to Rebuild
Lone Tree, CO
Wednesday, May 20th, 2026
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GMR Backyard Ultra
Golden, CO
Saturday, May 23rd, 2026
Mile High Mile
Boulder, CO
Farish Trail Race
Woodland Park, CO
Race Day Support Add-On
Wednesday, May 27th, 2026
Evergreen Trail Race Series
Evergreen, CO
Saturday, May 30th, 2026
Brooks Mile High Mile
Denver, CO
The Barmen Mile
Arvada, CO
Wednesday, June 3rd, 2026
Global Running Day with Altra & Runners Roost
Berthoud Day 5K
Berthoud, CO
Saturday, June 6th, 2026
Summits Trail Runs
Granby, CO
J-Town Jog 5K and Youth Mile
Johnstown, CO
Crazy Legs 10k+ Trail Run
Loveland, CO
Sunday, June 7th, 2026
Flamingo Day 5K
DU Dash Colorado
Palmer Lake, CO
The Big Run Presented by Brooks
Colorado 13er (Half Marathon/10k/5k)
Louisville, CO
RMRR June Trophy Series
Sweat & Snack Community Run + Episode 1 Gel Pre...
Tuesday, June 9th, 2026
Stepping Stone 5K
Littleton, CO
Saturday, June 13th, 2026
All-Out Summer Breeze
Treat Trot Denver
Thornton, CO
Guardian Games
Holy Hammers Hustle for Habitat
Parker, CO
Tutu Dash 5K
Broomfield, CO
The Bullfrog Splashdown
Sunday, June 14th, 2026
HRCA Happy Hour Half K
Friday, June 19th, 2026
Unicorn 5k (North)
Saturday, June 20th, 2026
Muddy Dash | Denver 2026
Dacono, CO
Sierra's 5K Run/Walk Race Against Meningitis
Parker Parks and Recreation Dash Across the Dam...
Juneteenth Fun Run 5K
Sunday, June 21st, 2026
Sunset Trail Running Festival
14th Annual Buffs4Life Kyle MacIntosh Memorial ...
Father's Day Classic 10k, 5k, & 1 Mile
The Red Schoolhouse Run
Tuesday, June 23rd, 2026
Fitness Expo On Tap at the Colorado Tap House
Saturday, June 27th, 2026
Denver Pride 5K
Before The Fourth 5k
Pearl Street Mile
Firework Color Run
Cade’s Cause: Concussion & CTE Awareness Run/Walk
Sunday, June 28th, 2026
Blue Sky Ascent & Round Trip (formerly the Mt. ...
Idaho Springs, CO
Avery Brewing Co. 4K on the 4th
Saturday, July 4th, 2026
Loveland Liberty 5K
Let Freedom Run 5k/10k - Louisville
Let Freedom Run 5k - LONGMONT
Longmont, CO
4th of July Donut Hole Mile
4 Miles on the 4th
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